US2686735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode material
Assignee: RCA Corp
•
Filing: 1951-01-03
•
Granted: 1954-08-17
•
Expires: 1971-01-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas Charles Hastings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:14
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD OF PREPARING A CATHODE ELECTRODE FOR A DISCHARGE DEVICE, SAID METHOD INCLUDING THE STEPS OF, COATING A METAL BASE MEMBER WITH A MIXTURE OF BARIUM CARBONATE AND NICKEL OXIDE, THE AMOUNT OF NICKEL OXIDE BEING FROM 25% TO 50% OF THE MIXTURE, HEATING SAID COATED BASE MEMBER IN A HYDROGEN ATMOSPHERE TO THE SINTERING TEMPERATURE OF NICKEL TO REDUCE THE NICKEL OXIDE OF THE COATING TO NICKEL AND TO SINTER PART OF THE NICKEL FORMED TO THE METAL BASE MEMBER.
Claim 2
Independent Claim
82 words
THE METHOD OF PREPARING A CATHODE ELECTRODE FOR A DISCHARGE DEVICE, SAID METHOD INCLUDING THE STEPS OF, COATING A METAL BASE MEMBER WITH A MIXTURE OF BARIUM CARBONATE AND NICKEL OXIDE, THE AMOUNT OF NICKEL OXIDE BEING FROM 25% TO 50% OF THE MIXTURE, HEATING SAID COATED BASE MEMBER IN A HYDROGEN ATMOSPHERE TO THE SINTERING TEMPERATURE OF NICKEL TO REDUCE THE NICKEL OXIDE OF THE COATING TO NICKEL AND TO SINTER PART OF THE NICKEL FORMED TO THE METAL BASE MEMBER.
References Cited (Backward Citations)
US1755257A
Cited
US1935939A
Cited
US1809229A
Cited
US1903144A
Cited
US1983668A
Cited
US2041802A
Cited
US2103033A
Cited
US2049372A
Cited
US2142331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |